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600 S Washington Ave

Duplex · 2 units: 5 bed / 2 bath and 1 bed / 1 bath · 2,098 sq ft

Saint Peter, MN · View the listing ↗

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Photos, via Realtor.com.

Asking price
$274,000
2 units · $137K per unit
Monthly cash flow
−$21
at 20% down, 7%
Estimated rent
$2,800/mo
high confidence
Break-even price
$269,991
where cash flow hits $0

Adjust the numbers See the full breakdown

First look

This is a 6-bedroom Saint Peter house sold as a licensed duplex, and the layout is the main question. At the asking price our numbers land at about break-even (-$21/month, 6.3% cap), so there's no cushion for repairs, vacancy or a higher rate. The description gives no rents, taxes or utilities, so everything rests on our estimates. A 5-bed unit estimated at $1,425 and a 1-bed at $1,375 look inconsistent: a kitchenette 1-bed renting near a 5-bed suggests one number is off. Verify the rental license, how the units are actually separated, and the real rent roll before a showing. It has sat 112 days, so there is room to negotiate.

Things to consider

  1. Cash flow is break-even at asking Our underwriting shows -$21/month at a 6.3% cap rate. Any surprise repair or vacancy pushes it negative, so price matters more than usual.
  2. Unit configuration and legality need confirming A 5-bed unit plus a kitchenette 1-bed is unusual. If the license or egress doesn't match, rent and insurance could suffer.Listing says: “This is a licensed 6 bedroom duplex.”
  3. Rent estimates look inconsistent Our estimate puts the 1-bed near the 5-bed's rent, so the real split could be very different. Actual rents decide whether this works.
  4. Heavy wear from a 5-bedroom unit Many bedrooms and likely student-type turnover mean more repairs, so budget for higher maintenance and vacancy.Listing says: “The main portion has 5 bedrooms (both up and down)”
  5. Age of an 1870 building Structure, wiring, plumbing and foundation could all be original. Get a full inspection before relying on the numbers.
  6. Negotiation room after 112 days A long listing time suggests the seller may accept lower. Our break-even price is about $270K, below the $274K ask.

From the photos

Listing photo 3
1 of 8Plus

Roof shingles appear fairly new and even, and the vinyl siding looks in decent shape from the exterior.

Listing photo 6
2 of 8Plus

Kitchen appears updated, with newer cabinets, stainless appliances, laminate counters and tile backsplash. Updates look cosmetic and fairly recent.

Listing photo 4
3 of 8Check

Hardwood floors in the living and dining rooms look dark and worn but intact. Refinishing may be needed.

Listing photo 9
4 of 8Concern

Shower pan shows heavy rust or mineral staining, and the tile and shower base look mismatched. Check for leaks and the age of the plumbing.

Listing photo 8
5 of 8Check

Upstairs bedroom has a sloped ceiling and new carpet, so it is a smaller attic-style room. Confirm ceiling height and egress for bedroom legality.

Listing photo 2
6 of 8Check

Central AC condenser is visible outside and forced-air registers appear in the rooms, so heating is likely forced air. Furnace count and age are not shown.

Listing photo 1
7 of 8Concern

Front steps are old and uneven with a single handrail, and the lot is on a rise above the street. Look at the steps and drainage.

Listing photo 6
8 of 8Check

No photos of the basement, mechanicals, electrical panel, the upper kitchenette or a second entrance. The unit separation can't be judged.

Based on 10 of the listing photos. Photos can hide as much as they show; an inspection is the real answer.

Condition and repairs

  • doneLots of updates and improvements over the years (unspecified, no dates)Listing says: Lots of updates and improvements have went into this rental property over the years

AI-assisted first read of the listing description and photos (Claude), checked against public records. Every rent and repair above quotes the listing; verify with the agent, leases and an inspection.

The numbers

Down payment %
Offer $
Management
Interest rate %
Edit rents, costs and assumptions

Default: 20% down (no PMI), offer at asking, self-managed, 7.00% for 30 years, buyer pays closing costs (3%).

The deal

Price
$274,000
Cash to close
$63,020
Price per unit
$137,000
GRM
8.2

Each month

Cash flow
−$21/mo
Cash-on-cash
−0.4%
Cap rate
6.3%
DSCR
0.99×

Break-even

Price that breaks even
$269,991
Rent that breaks even
$2,828/mo

Long run

Year 30: property vs stocks
$1.14M vs $482K
Cash flow turns positive
year 2

Monthly

Monthly breakdown

Rent$2,800
Vacancy (6%)−$168
Collected$2,632
Property tax Listing−$276
Insurance Estimate−$213
Water, sewer, trash Estimate−$170
Lawn care ($120 × 6 mo ÷ 12)−$60
Repairs (8% of rent)−$224
Capital reserve (9% of rent)−$252
Net operating income$1,437
Mortgage (principal + interest)−$1,458
Cash flow−$21
Principal paid down (equity, not cash)$186

Cash flow each year

Rents +3%/yr, costs +3.5%/yr. Red bars are months you'd cover out of pocket.

30 years

How those totals add up

If you buy this building$1,142,958
Your equity when you sell
$625,166

Sells for $665,070 (value up 3% a year), minus 6% selling cost ($39,904). Rent paid down $219,200 of loan.

Rental profits, invested at 7%
$517,792

$260,726 of cash flow over 30 years, plus what it earned invested.

Same money in stocks$481,546
Cash to close, invested at 7%
$479,724

$63,020 put into an index fund instead of the down payment and closing costs.

Monthly shortfalls, invested
$1,822

$256 you'd have paid in while the building lost money, invested instead.

The building comes out $661,412 ahead after 30 years.

Future dollars. At 3% inflation, divide year-30 figures by about 2.4 for today's buying power. Rental profits are assumed invested, not spent.

30 years: this property vs. the same money in stocks

This propertyStocks at 7%

Year 30 (loan paid off): property $1.14M, stocks $482K. The property wins.

Comparable rentals

Nearby rentals RentCast matched to each unit type, as of 2026-10-06. The estimate above is RentCast's, weighted toward the closest matches.

5 bed / 2 bath estimate $1,425/mo · range $1,075–$1,750

AddressRentBd / BaSq ftDistanceListedMatch
219 Park Row, Unit B, Saint Peter 56082 $1,200 2 / 1 — 0.4 mi 2023-01-06 70%
117 S Minnesota Ave, Saint Peter 56082 off market $1,100 1 / 1 — 0.5 mi 2026-07-17 69%
1334 W Menk Dr, Saint Peter 56082 off market $1,325 3 / 2 1,500 1.1 mi 2026-01-13 69%
1701 Riggs Rd, Apt 1, Saint Peter 56082 off market $995 2 / 1 — 1.4 mi 2026-05-12 68%
1701 Riggs Rd, Apt 3, Saint Peter 56082 off market $995 2 / 1 — 1.4 mi 2025-04-14 68%
1707 Riggs Rd, Apt 2, Saint Peter 56082 off market $1,045 2 / 1 — 1.5 mi 2026-04-16 68%
102 S 5th St, Apt 5, Mankato 56001 off market $1,695 4 / 2 — 11.1 mi 2026-05-06 68%
409 Smith St, Le Sueur 56058 off market $2,100 5 / 2 2,128 9.6 mi 2026-09-02 67%
240 Summit Park, Saint Peter 56082 off market $1,275 3 / 2 1,216 1.6 mi 2026-08-08 66%
820 N Washington Ave, Saint Peter 56082 off market $1,749 4 / 2.5 1,845 0.8 mi 2026-09-10 65%

1 bed / 1 bath estimate $1,375/mo · range $1,275–$1,500

AddressRentBd / BaSq ftDistanceListedMatch
117 S Minnesota Ave, Saint Peter 56082 off market $1,100 1 / 1 — 0.5 mi 2026-07-17 93%
219 Park Row, Unit B, Saint Peter 56082 $1,200 2 / 1 — 0.4 mi 2023-01-06 84%
1701 Riggs Rd, Apt 1, Saint Peter 56082 off market $995 2 / 1 — 1.4 mi 2026-05-12 82%
1701 Riggs Rd, Apt 3, Saint Peter 56082 off market $995 2 / 1 — 1.4 mi 2025-04-14 82%
1707 Riggs Rd, Apt 2, Saint Peter 56082 off market $1,045 2 / 1 — 1.5 mi 2026-04-16 82%
215-217 S Minnesota Ave, Saint Peter 56082 off market $850 1 / 1 700 0.4 mi 2026-03-17 82%
1573 Aspen Dr, Saint Peter 56082 $1,255 1 / 1 704 0.8 mi 2025-04-12 81%
605 Swift St, Saint Peter 56082 off market $974 1 / 1 500 0.8 mi 2026-03-05 80%
1403 N Washington Ave, Saint Peter 56082 off market $975 1 / 1 550 1.2 mi 2026-05-15 79%
301 N Riverfront Dr, Apt 305, Mankato 56001 off market $995 1 / 1 — 10.8 mi 2026-01-21 77%

On the maps, this property and comparable rentals. Comparable rentals and rent estimate: RentCast. Rents are asking rents from listings; check them against the actual leases.

Red flags and opportunities

Watch for

  • highOdd layout: the 5-bed unit spans both floors and the 1-bed upper has only a kitchenette and shower room. Legality and separation are unclear. Listing says: The 1 bedroom apartment is on the upper level, and features a kitchenette, and has a private shower room. · AI review
  • mediumDescription floats alternate configurations, which suggests the current unit split isn't clean or fixed. Listing says: This could also be configured so there is a 2 bedroom unit on the main · AI review
  • mediumNo rents, lease status, taxes or utility info given. The income side is unverified. Based on: data: county.tax · AI review
  • medium1870 build with no stated age for roof, wiring, plumbing or heating. Based on: data: listing.year_built · AI review

Opportunities

  • Long time on market: room to negotiate. Based on: Listing data: 112 days on market
  • Could be reconfigured into a 2-bed plus 3/4-bed or used as a single-family home, giving more exit options. Listing says: It would also make a great single family home! · AI review
  • Kitchen and finishes look fairly updated, so little cosmetic work may be needed on the main kitchen. Based on: photo 6 · AI review
  • Long time on market gives room to negotiate toward break-even price. Based on: data: underwriting.break_even_price · AI review

Questions for the agent

  • What are the current rents and lease terms for each unit? Can I see the rent roll and leases?
  • Does the city rental license list two units and six bedrooms? Is it current and transferable?
  • Is the upper unit fully separate with its own entrance, and does it have its own kitchen, or only a kitchenette?
  • What are annual taxes, and who pays heat, water, electric and trash?
  • How many meters, furnaces and water heaters are there? What are the ages of the roof, furnace and electrical panel?
  • Why has it been listed 112 days, and have there been price cuts or offers?

Bottom line

Break-even at asking with an unclear unit layout and no rents given, so only worth a look at a lower price once the license and rent roll check out. AI-assisted summary

What the records say

Where each number comes from

Property tax / yr Listinglisting, tax year 2026. The tax the listing states. If the seller lives there it may be at the lower homestead rate; an investor owner pays the non-homestead rate, often 20–40% more on the owner's unit.$3,311
Insurance / yr Estimateestimate. from units, square feet and age; get a quote$2,557
Water, sewer, trash / mo Estimateestimate. $85/unit/mo, owner-paid$170
Heat / mo Assumptionassumption. tenants pay heat; confirm with the agent$0
Lawn care / mo Assumptionassumption. $120/mo for 6 months, spread over 12; no snow removal$60
Repairs / capital reserve Rulerule. built 1870: +1 pt capital reserve8% / 9%

Price history Realtor.com

On the market since 2026-06-17 (111 days); down $25,900 (8.6%) from the first ask of $299,900; last sold for $220,000 on 2023-07-07.

DateEventPrice
Price changed$274,000
Price changed$289,900
Listed$299,900
Listed$299,900
Sold$220,000
Listed$230,000
Sold public record$176,000
Sold public record$121,750

From the listing Listing

Listed asmulti-family
Property tax, 2026$3,311
CountyNicollet County
Parcel number19.501.0370

As the listing states it (NorthstarMLS, via Realtor.com). We don't have county records here yet; check the tax, homestead status and special assessments with the county.

Crime, rental-license and vacant-building records are only available for St. Paul and Minneapolis so far. Check with Saint Peter on rental licensing before you buy.